How To Clean A Circuit Board Of Corrosion. Because baking soda is mildly abrasive, you can use it to scrub off corrosion and residue that won’t release with compressed air. Use a small soft brush to gently scrub the residue of the board.
Take a photo or make note of the circuit board’s configuration to allow for easy reassembly once the cleanup is complete. It appears that this actively strips corrosion without damaging the tracks, and in some cases actually brings the board back to life for a while at least. This is a last ditch remedy but worked a few times for me even on r/c stuff.
Just pass the compressed air through one of the circuit board holes, and you will see that dust particles will come out from the other hole.
Not only that, but it’s likely that you already have baking soda in your kitchen cabinet. It clears and neutralizes any corroded areas without damage. Thorough drying of the circuit board is critical. The ions in regular water have conductive.